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FAIR VALUE MEASUREMENTS (Acquisition-Related Contingent Consideration Roll Forward) (Details) $ in Thousands | 9 Months Ended
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Sep. 30, 2020 USD ($)
Discount rate | 2020 Acquisitions | Maximum |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Measurement input to determine fair value of contingent consideration | 0.175
Discount rate | 2020 Acquisitions | Minimum |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Measurement input to determine fair value of contingent consideration | 0.155
Level 3 |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
Contingent consideration liabilities as of January 1, 2020 | $ 10,495
Payment of contingent consideration for previously acquired business | (7,869)
Effect of net foreign currency exchange rate changes | (525)
Contingent consideration liabilities as of September 30, 2020 | 5,913
Level 3 | Interest and other income, net |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
Changes in the fair value of contingent consideration | (1,480)
Level 3 | 2020 Acquisitions |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
Acquisition date fair value of contingent consideration | $ 5,292

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